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[PATCH v3 6/9] MIPS: KVM: Restore correct value for WIRED at TLB uninit

To: <pbonzini@redhat.com>
Subject: [PATCH v3 6/9] MIPS: KVM: Restore correct value for WIRED at TLB uninit
From: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Date: Tue, 24 Jun 2014 10:31:07 -0700
Cc: <gleb@kernel.org>, <kvm@vger.kernel.org>, <sanjayl@kymasys.com>, <james.hogan@imgtec.com>, <ralf@linux-mips.org>, <linux-mips@linux-mips.org>, <dengcheng.zhu@imgtec.com>
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From: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>

At TLB initialization, the commpage TLB entry is reserved on top of the
existing WIRED entries (the number not necessarily be 0).

Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
---
 arch/mips/kvm/mips.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 27250ee..3d53d34 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -170,7 +170,7 @@ void kvm_arch_sync_events(struct kvm *kvm)
 static void kvm_mips_uninit_tlbs(void *arg)
 {
        /* Restore wired count */
-       write_c0_wired(0);
+       write_c0_wired(read_c0_wired() - 1);
        mtc0_tlbw_hazard();
        /* Clear out all the TLBs */
        kvm_local_flush_tlb_all();
-- 
1.8.5.3


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